Question

我试图在我的数据库中查找$ searchtext，其中$ selecteditem代表它正在搜索的columb。我在代码的最后部分出现语法错误

我的表格 -

<form name="search" id="search" method="POST" action="">
    <input type="text" name="searchterm" id="searchterm">
    <select name="selectitem">
        <option value="propertydescription">Property/Description</option>
        <option value="transactiontype">Transaction type</option>
        <option value="applicabledocument">Applicable document</option>
        <option value="recieved">recieved</option>
        <option value="paid">paid</option>
    </select>

</div></td>
<td>&nbsp;</td>
<td><input type="submit" name="search" value="search"></td>

我的php for this-

if (isset($_POST['search']))
{
    $columbname = $_POST['selectitem'];
    $searchterm  = $_POST['searchterm'];
    $query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND WHERE '$columbname' = '$searchterm'";
    $result = mysql_query ($query) or die(mysql_error());
}
else

Answer 1

if (isset($_POST['search']))
{
$columbname = $_POST['selectitem'];
$searchterm  = $_POST['searchterm'];
$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND $columbname = '$searchterm'";
$result = mysql_query ($query) or die(mysql_error());
}

Answer 2

删除第二个WHERE
删除从$columbname变量获得的列名称周围的引号。

更改

$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND WHERE '$columbname' = '$searchterm'";

到

$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND $columbname = '$searchterm'";

旁注：您的代码容易受到sql注入攻击。切换到mysqli或PDO并使用预准备语句。

Answer 3

我已经替换了您的PHP代码，现在它运行良好

if (isset($_POST['search']))
{
$columbname = $_POST['selectitem'];
$searchterm  = $_POST['searchterm'];
$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' && 'columbname' = '$searchterm'";
$result = mysql_query ($query) or die(mysql_error());
}
else

Answer 4

请在SQL查询中仅用AND WHERE替换AND。

Answer 5

使用此（删除第二个）：

$query="SELECT * FROM transactions 
WHERE agentclient  = '$agentclient' 
AND '$columbname' = '$searchterm'";

Answer 6

修复查询。使用此：

$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND '$columbname' = '$searchterm'"

而不是：

$query="SELECT * FROM transactions WHERE agentclient  = '$agentclient' AND WHERE '$columbname' = '$searchterm'"

（你有太多 WHERE ）

Answer 7

您应该在AND WHERE查询中替换AND SELECT，'

中不需要$columbname

if (isset($_POST['search']))
{
 $columbname  = $_POST['selectitem'];
 $searchterm  = $_POST['searchterm'];
 $query       = "SELECT * FROM transactions WHERE (agentclient  = '$agentclient' AND $columbname = '$searchterm')";
 $result = mysql_query ($query) or die(mysql_error());
}

注意：请勿使用已弃用的mysql_扩展名。使用mysqli 或PDO代替。

Answer 8

更改您的查询：

$query = "SELECT * FROM transactions 
          WHERE agentclient  = '$agentclient' 
          AND $columbname = '$searchterm'";

mysql搜索表w / php并返回结果

8 个答案: